Allegheny Valley School District

Acmetonia is a community within Harmar Township, Allegheny County, Pennsylvania, United States. Acmetonia Primary School as well as the Allegheny Valley School District administrative offices are located on Pearl Avenue in Acmetonia. The natural southern boundary of Acmetonia is the Allegheny River and the primitive Allegheny Islands State Park is nearby. The community is served by the Cheswick post office with the ZIP code of 15024.

The Bessemer & Lake Erie Railroad Bridge is a truss bridge that carries the Canadian National Railway's Bessemer and Lake Erie Railroad division across the Allegheny River between the Pittsburgh suburbs of Plum and Harmar Township, Pennsylvania. In 1897, a single-track trestle and viaduct was built on this site; in 1918, the original piers were doubled in width, the current double-tracked structure built alongside, and then slid into place. The original north trestle approach was buried in slag dumped from an adjacent temporary filling trestle.

The Allegheny River Turnpike Bridge carries Interstate 76 (Pennsylvania Turnpike) over the Allegheny River. The structure features a pair of twin 2,350’ cast-in-place concrete segmental bridges. This is the first of its type in Pennsylvania. It was constructed between 2007 and 2010 and is the second bridge to stand on this site. The original truss bridge was built between 1949 and 1951 by the engineering firm Modjeski & Masters; the crossing predates the Interstate System by several years. The replacement bridge was designed by the engineering firm Figg and built by Walsh Construction. The purpose of the new structure was to increase the capacity of traffic from two lanes in each direction to three; this was done to eliminate a bottleneck at the exit with Pennsylvania Route 28, which branches off at the bridge approach on the Harmar side of the river.[1] The replacement eastbound bridge opened in November 2009. It carried both eastbound and westbound traffic across the Allegheny River until the project was finished one year later. On Tuesday, July 13, 2010, just after 10 a.m., the old steel structure of the Allegheny River Bridge was imploded with controlled demolition explosives. Roadway traffic was stopped for approximately 15–20 minutes, and river traffic was stopped for 24 hours for cleanup of the debris from the bridge.

The University of Pittsburgh Applied Research Center (U-PARC) is a one-million-square foot (93,000 m2), high-security research park campus of the University of Pittsburgh. Comprising 53 buildings situated on over 85 acres (0.34 km2), U-PARC is located 14 miles (23 km) from Downtown Pittsburgh in Harmar Township, Pennsylvania adjacent to the Route 28 expressway and Interstate 76, the Pennsylvania Turnpike.It was founded as the research laboratories of Gulf Oil in 1933 and moved to Harmar Township in 1935. It served many decades as one of the leading industrial research centers in the world, with labs engaging in petroleum, chemical, polymer, refining, and nuclear research. At its peak, it employed over 2,000 scientists and engineers and had an annual budget of $100 million ($272 million in 2022 dollars). Upon Gulf Oil's acquisition by Chevron Oil in 1985, the research park was donated to the University of Pittsburgh in order to keep the center open for the benefit of the region. U-PARC is home to more than 100 different companies from around the world, including several Fortune 500 Companies. In addition, the university's Swanson School of Engineering maintains laboratories and its Manufacturing Assistance Center at the site. It also serves as the home to the School of Health and Rehabilitation Sciences' Masters of Science program in Physician Assistant Studies.

Harmar Township is a township in Allegheny County, Pennsylvania, United States. It contains the communities of Acmetonia, Harmarville, Harmar Heights, and Chapel Downs. The population was 3,136 at the 2020 census. The township was named after Harmar Denny, a U.S. congressman and son of Ebenezer Denny.

Allegheny Islands State Park is a 43-acre (17 ha) Pennsylvania state park in Harmar Township, Allegheny County, Pennsylvania in the United States. The undeveloped park is composed of three alluvial islands located in the middle of the Allegheny River northeast of Pittsburgh. The islands are just north of the boroughs of Oakmont and Plum, and southwest of Cheswick. Bridges for the Pennsylvania Turnpike (Interstate 76) and the Bessemer and Lake Erie Railroad Branch of the Canadian National Railway cross the Allegheny River at the middle island.

C.W. Bill Young Lock and Dam (formerly known as Allegheny River Lock and Dam No. 3) in Harmar Township, Allegheny County, Pennsylvania, and Plum, Pennsylvania, is a lock that was built in 1932. The lock and fixed-crest dam were built by the U.S. Army Corps of Engineers as a part of an extensive system of locks and dams to improve navigation along the Allegheny River. C.W. Bill Young Lock and Dam is located about 14.5 Miles up the Allegheny River from the Point in Downtown Pittsburgh. Upriver, the pool has an average water elevation of 734.5 feet above sea level and extends about 9.7 miles upriver to Allegheny River Lock and Dam No. 4. Downriver, Allegheny Pool No. 2 has an average water elevation of 721 feet above sea level and extends about 7.8 miles downriver to Allegheny River Lock and Dam No. 2. Thus Lock No. 3 lifts and lowers boats about 13.5 feet between the pools.The site has six contributing structures, the dam, the lock, an esplanade, the operations building, a gauging station, and a lockkeepers house.Two 2-story frame lockkeepers houses for the former lock and dam structures were constructed about 1907, with the older house at 301 Barking Road surviving.The site was listed on the National Register of Historic Places on April 21, 2000.

Harwick is a census-designated place (CDP) in Allegheny County, Pennsylvania, United States, and is located within Springdale Township. As of the 2020 census, it had a population of 850.

Cheswick is a borough in Allegheny County, Pennsylvania, United States, along the Allegheny River. The population was 1,672 as of the 2020 census. Cheswick Borough was incorporated in 1902. It is a residential suburb of the Pittsburgh metropolitan area.

The BladeRunners Ice Complex was a group of ice hockey rinks and sports facilities which were located in Western Pennsylvania.

The Harwick Mine disaster was a mining accident on January 25, 1904 in Cheswick, Pennsylvania, some sixteen mi (26 km) east of Pittsburgh in the western part of the state. The blast killed an estimated 179 miners and 2 aid workers. The disaster ranks among the ten worst coal mining disasters in American history. One community especially impacted was the Hungarian community in Homestead, Pennsylvania. Fifty-eight of the members of the First Hungarian Reformed Church of Homestead—a full third of the congregation—died in the explosion. Coal was mined by compressed-air machine, blasted down with dynamite. Ice accumulation in the air shaft restricted ventilation which caused a buildup of methane gas. At 8:15 am, workers blasted down dynamite which ignited the methane. Coal dust suspended in the air assisted the explosion in traveling throughout every region of the mine. In addition to interior devastation, the force was so powerful that it wrecked the exterior of the shaft. Of 175 mine workers underground at the time, the single survivor was the severely burned 16-year-old Adolph Gunia. Other casualties included Daniel A. Lyle and the mine engineer Selwyn M. Taylor, who both gave their lives in rescue attempts after responding to the scene. Greatly touched by Taylor's and Lyle's sacrifice, Andrew Carnegie had medals privately minted for their families, and within two months had established a $5 million Carnegie Hero Fund as a result. The mine was owned by the Allegheny Coal Company.

The 1951 PGA Championship was the 33rd PGA Championship, held June 27 to July 3 at Oakmont Country Club in Oakmont, Pennsylvania, a suburb northeast of Pittsburgh. Sam Snead won the match play championship, 7 & 6 over Walter Burkemo in the Tuesday final; the winner's share was $3,500 and the runner-up's was $1,500.It marked the first time the PGA Championship returned to a venue; Oakmont had hosted in 1922 (at the time, it had also hosted two U.S. Opens and three U.S. Amateurs). It was the third and final win for Snead in the PGA Championship, and the fifth of his seven major titles. At age 39, he was the oldest at the time to win the PGA Championship, passing his old record of two years earlier. Burkemo won the title in 1953 and was runner-up again in 1954. Defending champion Chandler Harper lost in the first round to Jim Turnesa in a match that went to 23 holes. Turnesa, the runner-up to Snead back in 1942, won the title following year in 1952, and displaced Snead as the oldest champion by a few months. Snead's win was the last by a former champion for twenty years, until Jack Nicklaus won his second PGA Championship in 1971. Claude Harmon, Lloyd Mangrum, and Pete Cooper tied for the lowest score in the stroke play qualifier at 142 (−2). Harmon won the $250 medalist prize on the third hole of a sudden-death playoff.The British Open in 1951 was held in the first week of July in Northern Ireland. Its mandatory two-day qualifier was held the same days as the PGA's semifinals and finals, which prevented participation in both events.